CVE-2021-47780
CVE-2021-47780 is a high-severity vulnerability in Macro-expert Macro Expert with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-428.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v4: 8.5
- EPSS exploit prediction: 0% (13th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-3037
- Weakness: CWE-428
- Affected product: Macro-expert Macro Expert
- Published:
- Last modified:
Description
Macro Expert 4.7 contains an unquoted service path vulnerability that allows local users to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the improperly configured service path to inject malicious executables that will be run with LocalSystem permissions during service startup.
Frequently asked questions
- What is CVE-2021-47780?
- Macro Expert 4.7 contains an unquoted service path vulnerability that allows local users to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the improperly configured service path to inject malicious executables that will be run with LocalSystem permissions during service startup.
- How severe is CVE-2021-47780?
- CVE-2021-47780 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-47780 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-47780?
- CVE-2021-47780 affects Macro-expert Macro Expert. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-47780?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2021-47780 have an EU (EUVD) identifier?
- Yes. CVE-2021-47780 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3037.
- When was CVE-2021-47780 published?
- CVE-2021-47780 was published on 2026-01-16 and last updated on 2026-06-17.
References
- http://www.macro-expert.com/
- https://www.exploit-db.com/exploits/50431
- https://www.vulncheck.com/advisories/macro-expert-unquoted-service-path
Affected products (1)
- cpe:2.3:a:macro-expert:macro_expert:4.7:*:*:*:*:*:*:*
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